Battery charger



FIG. 1 is a perspective view of a first embodiment of a battery charger showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a left side elevational view thereof; and

FIG. 4 is a right side elevational view thereof.

FIG. 5 is a perspective view of a second embodiment of a battery charger showing our new design;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a left side elevational view thereof; and,

FIG. 8 is a right side elevational view thereof. 

The ornamental design for a battery charger, as shown and described. 